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Semgrep Scanner

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Run Semgrep static analysis from an AI agent. OWASP top 10, secrets detection, custom rule packs. Baseline scanning to focus only on newly-introduced findings.

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About

Run Semgrep static analysis from an AI agent. OWASP top 10, secrets detection, custom rule packs. Baseline scanning to focus only on newly-introduced findings. Built for production-grade security review workflows.

README

Archimedes Trust Report — VERIFIED 92/100

Verified asset on Archimedes Market. View the full 4-dimension Trust Report (security · quality · license · complexity) and the curated catalog on the asset page.


MCP Semgrep Scanner

Run Semgrep static analysis from an AI agent. Lets an agent scan a repo with prebuilt rulesets (OWASP top 10, secrets, language-specific packs), surface findings with severity scoring, and run baseline diffs to focus only on newly-introduced issues.

Tools

  • scan — run a default scan (p/security-audit + p/secrets) and return findings sorted by severity
  • scan_with_ruleset — scan with one or more named rulesets (p/owasp-top-ten, p/python, etc.)
  • list_rulesets — built-in rulesets available without a Semgrep account
  • get_finding_details — full rule metadata + remediation hint for a finding ID
  • baseline_scan — scan only files modified since a git ref (HEAD~1, main, custom SHA)

What gets returned

Each finding includes:

  • rule_id — the Semgrep rule that matched
  • severityERROR | WARNING | INFO
  • cwe — CWE classification if available
  • owasp — OWASP category mapping
  • file + line_start + line_end
  • message — human-readable explanation
  • fix — suggested patch if available

Quick start

pip install mcp-semgrep-scanner
# Optional: Semgrep account token for Pro rules
export SEMGREP_APP_TOKEN="..."
mcp-semgrep-scanner serve

Typical agent workflow

Agent: "Are there any security issues in this PR?"
↓
1. baseline_scan(repo="/path/to/repo", base_ref="origin/main")
   → returns only findings introduced by the PR's diff
2. get_finding_details(finding_id=...) for the ERROR-severity ones
3. Agent suggests fixes inline in PR review

License

MIT.

from github.com/archimedes-market/mcp-semgrep-scanner

Installing Semgrep Scanner

This server has no published package — it is built from source. Open the repository and follow its README.

▸ github.com/archimedes-market/mcp-semgrep-scanner

FAQ

Is Semgrep Scanner MCP free?

Yes, Semgrep Scanner MCP is free — one-click install via Unyly at no cost.

Does Semgrep Scanner need an API key?

No, Semgrep Scanner runs without API keys or environment variables.

Is Semgrep Scanner hosted or self-hosted?

Self-hosted: the server runs locally on your machine via the install command above.

How do I install Semgrep Scanner in Claude Desktop, Claude Code or Cursor?

Open Semgrep Scanner on unyly.org, pick your client tab (Claude Desktop, Claude Code, Cursor) and press Install — the config is generated automatically, no JSON editing.

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